But, just to clarify, Ron Paul would support bans on abortion, falling under the homicide code, which take place at the state level. The state level is the constitutional level at which to deal with abortion.
If we spend years going after capturing the Supreme Court, and focus all our energy on that, then we give a good deal of legitimization to that body. If the Congress passed legislation removing the jurisdiction of the Court from this area, and returned it to the state level, it would be a lot easier and quicker in getting pro-life legislation passed. Then people who are pro-life have the option of moving to a pro-life state or a pro-abortion state. Otherwise, we will experience swings back and forth between a pro-life supreme court who rules for 40 years, and a pro-abortion court that rules for the next 40 years, and during this time, no one is happy, since they are constantly fighting national battles.
Remember, in the early ante-bellum Republic, states rights was used consistently in every single instance to fight the pro-slavery South's control of the Federal government. Imagine if the federal government were as powerful then as it was today. Remember the Fugitive Slave Act of 1850 which went way beyond the fugitive 'slave' clauss in the constitution, and old act in the early 1790s. The slave holding states used this as a means to force their institution, through federal power, onto the free states, by allowing federal marshals to become slave catchers. And, of course, we all know that the free states consistently resisted this unconstitutional piece of legislation, even after the Supreme Court accepted it as legit. Wisconsin's Supreme Court in 1859 even declared the Act illegal, and the Federal Supreme Court's actions unconstitutional, and not to be enforced in this state. States rights has always tended to the side of good, in the long run. With multiple different political entities, one state can only do so much evil (before people leave, vote them out, or rebel), but, other states will not have to be forced to adhere to their immoral policies, and plus, the better states will stand as an example.
Remember, all the early anti-slavery people tended to be very much anti-federal government, they were even proposing the North seceed from the United States and form a free republic, not tainted with the slave states.
What would happen if dozens of state today, say, just decided to pass pro-life legislation, and nullify the SCOTUS decisions? Would the federal government really send in the army and marines, and start doing mass arrests? Would they declare martial law if hundreds of thousands of protesters were fighting them in the streets? Would they really start massacring thousands of people in said states, and conducting bombings of cities because the people of the states have exercised their sovereignty by banning a practice they believe to be murder, but that the opponents believe to be a surgical option necessary for great 'mobility' in life?